Manufacture of hollow glass articles.



No. 724,179. PATENTED MAR. 31, 1903.

- W. J. GREENWOOD- I MANUFACTURE OF HOLLOW GLASS "ARTICLES.

APPLICATION rum) mm: 21, 1902.

no uonmh' m: humus warms co, mom-Una. wumum'cy. n. c. 4

UNITED STATES.

. PATENT OFFICE.

WILLIAM J. GREENWOOD, OF TAREN'IUM, PENNSYLVANIA.

MANUFACTURE OF HOLLOW GLASS ARTICLES.

SPECIFICATION forming part of Letters Patent No. 724,179, dated March 31, 1903.

' Application filed June 21, 1902.

To a, whom it may concern:

Be it known that 1, WILLIAM J. GREEN- WOOD, acitizen of the United States ofAmerica, residing at Tarentum, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in the Manufacture of Hollow Glass Articles, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to certain new and useful improvements in press-molds for hollow articles, and it is an improvement upon my Letters Patent under date of April 1, 1902, No. 696,430, in which I provided'a pressmold which would do away with the annular seam or recess usually formed on the outer surface of the upper bulged-shaped enlargement of the neck and more particularly to form a seamless neck, the object of this present invention being to provide a mold which will form a seamless neck, but will do away with the seam which is formed upon the upper face of the bulged-shaped portion of the neck of the receptacle.

To put myinvention intopractice I provide a press-mold having a top collar, said top collar carrying annular projections which form the annular seat within the'neck of the bottle, and in so forming the seat I do away with the seam formed upon the upper faceof the bulged-shaped portion of the neck,thereby providing the upper face of this enlargement with a smooth surface, and by changing the form of the projections upon the top collar of my mold I move this scam inwardly to the edge of the vertical side of the annular recess.

With the above and other objects in view the invention consists in the novel construction, combination, and arrangement of parts, to be hereinafter more fully described, and specifically pointed out in the claim.

In describing the invention in detail reference is had to the accompanying drawing, forming a part of this specification, and which figure represents a Vertical sectional view of my improved mold.

In the drawing the reference-numeral 1 indicates the top of the press-mold, which carries the annular extending projection 2, upon which and around which is mounted the two-part hinged mold-ring 3, and upon this mold-ring rests the top collar 4., said col- Serial No. 112,577. (No model.)

lar having formed centrally therein an aperture 5 for the reception of the plunger 6, which is reciprocated during the pressing op'- eration.

The reference-numeral 7 represents the enlarged annular portion formed integral with the top collar, and formed integral with this portion 7 is an inner annular projection 8, this projection forming a seat on the inner face of the enlarged bulged portion of the neck of the bottle or receptacle. This annular projection 8 and the portion 7 seat themselves in corresponding recesses formed in the two-part hinged mold-ring, and I provide this annular portion with an inclined face 9 to guide the same into a registering position with the hinged mold-ring.

' It will be noted that the seam formed by the annular projection 8 is formed at the edge of the vertical side of the recess, thus making the enlarged bulged portion of the neck seamless.

It will be noted that various changes may be made in the details of construction with out departing from the general spirit of my invention.

' Having fully described my invention, What I claim as new, and desire to secure by Letters Patent, is-

A press-mold for bottles and the likehaving a hinged mold-ring thereon, a top collar resting upon said mold ring, an annular portion formed on the collar, said annular portion having its periphery inclined downwardly, an inner annular projection formed integral with said portion, the lower end of said projection extending intothe neck of the bottle, and having its upper end extending for a distance above the neck of the bottle, and contacting with the inner annular surface of the mold-ring, said annular projection being of equal diameter throughout with its lower end forming an annular seat on the interior of the bottle-neck, said annular portion and projection being received in corresponding recesses provided therefor in the mold-ring, substantially. as described.

In testimony whereof Iaffix my signature in the presence of two witnesses.

WVILLIAM J. GREENWOOD.

Witnesses:

JOHN NoLAND, E. E. POTTER. 

